Question

Why thermal stability of hydroxides increases down the grp 2?

Answer 1

Answer:

Explanation:

1. It is due to [increase in ionic radius.]

2. Due to [decrease in charge density and polarising power. ]

3. All group 2 metal ions have same charge(2+) but the smaller ones at the top of the group ha e it all packed into smaller space so they polarise

O-H bond more. This means O-H bond is partially broken so it requires less heat to break fully.

4. As we go down the [group O-H bond is less polarised so thermal stability increases.]